sharp-neck



(No Model.) 3 Sheets-Sheet 1. W. S. SHARP-NECK.

STAMP.

Patented June 23, 1885.

WHA/5885s 5y Affor/zey NA PETERS. FhowLhegnphtr, Washington. D4 C.

3 Sheets-Shee 2.

(No Model.)

W. s. SHARPNBGK.

STAMP.

Patented June 23, 1885.

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3 sheets'--sheet` s.

W. s. SHARPNECK.

(No Model.)

STAMP.

Patented June 23, 1885.

IJVVEJVTOR l UNiTED STATESy PAT EET OFFICE.

WILLIAM S. SI'IARPNECK, OF DENVER, COLORADO, ASSIGNOR TO HERBERT N. NICHOLS, OF SAME PLACE.

STAMP.

SPECIFICATION forming part of Letters Patent No. 320,818, dated June 23, 1885.

Application filed February 24, 1885.

To all whom it may concern:

Be it known that I, VILLIAM S. SHARP NEoK,a citizen of the United States of America, residing at Denver, in the county of Arapahoe a'id State of Colorado, have invented certain new and useful Improvements in Stamps, of which the following is aspeciication,reference being had therein to the accompanying drawings.

1o This invention relates to an improvementin stamps for crushing purposes; and the invention consists in the Apeculiar construction and arrangement, and the combinations of parts more particularly hereinafter described and claimed.

In the accompanying drawings, Figure 1 represents a vertical section of a machine constructed according to my improvement; Fig. 2, a similar section taken at right angles to that 2o shown in Fig. l. Figs. 3 and 4 show horizontal sections of parts, which will be hereinafter more fully described. Fig. 5 shows an enlarged detail of the valve in two positions; and Fig. 6 is a horizontal section through the line y y in Fig. 1.

Referring now to the details of construetion- A represents the mortar of any convenient form, but preferably of that form shown in the 3o drawings, and having secured to its sides two uprights, B, each provided with abearing, O, for a shaft, D, which carries a iiy-wheel, E, (which also serves as a band-pulley,) and two eccentrics, F, each of which is provided with 3 5 an eccentric strap, G, secured to a rod, H, which rod is secured by a pin, h, to the yoke I, having a boX, J, adj ustably secured by a key, K, in which box runs the cross-heads L, having on their opposite ends blocks M, run- 4o ning in guides N on a yoke, O, (shown in section in Fig. 3,) providedwith broad flanges on each end to connect them to the uprights B, and serving the double purpose of guides for the eross-heads and for connecting and staying said uprights. The cross-head L passes through ears P, attached to the hollow piston Q,which works air-tight in the cylinderR, (a section of which is shown at Fig. 4,) having at its upper end a packing-gland,r, and at its lower end an o extension, R', cast hollow at r for lightness, and carrying the shoe S, which strikes on the (No model.)

die T in the bottom of the mortar A, which mortar is provided with the usual grating, U, and an extension, V, having an opening at 'v to receive the orc. 5 5

Resting on the extension V of the mortar is an exterior cylinder, XV, forming a water-cup and guide for the cylinder R, provided with a gland, XV', and au extension, w, closed in at bottom so as to nearly touch the extension R 6o of the cylinder R. Vithin the cylinder Wis a lining, X, resting on a iiange, fw', and held against upward movements by the packing and gland W". This lining is perforated all around opposite an annular recess, w",formed in thecylinder W, vinto which recess leads a water-pipe, Y, connected with any convenient supply of water.

At c is shown a pipe passing through the piston Q, and opening into the space between 7o the bottom of the piston Q and the bottom of the cylinder R. At the upper end of this pipe is a valve, b, whose plug is connected with a lever, c, which works in a swivehpin, d, set in an arm, e, whose position can be adjusted as desired by the nut f, by which means the valve can be opened and closed earlier or later, as desired.

The operation is as follows: Motion being` given to the main shaft by abelt passing around So the fly-wheel E, the cceentrics, as they revolve, give motion to the pistons Q, which are thus alternately raised and lowered, and as soon as either piston has risen high enough to closeits valve it begins to rarefy the air beneath it and 8 5 to create a partial vacuum vin the cylinder R, which, whenit is powerful enough, raises said cylinder, and with it the shoe S. When the piston begins to descend, the cylinder, owing to the momentum it has acquired by its voloc- 9o ity,continues its upward movement, and thus the air in the cylinder R is compressed,and as the downward stroke of the piston Q is con tinued the cylinder is driven downward with great velocity, causing the shoe S to strike a powerful blow upon the ore or rock on the die T. 4

Owing to the great heat generated by the compression of the air, it is necessary that the air should be continually changed. This is accomplished by the opening of the valve b,which loo takes place near the lower end of the stroke, so that as the piston Q completes its downward motion a portion of the compressed air is driven out and escapes through the Valve,and

as the piston commences its return or upward movement more and cooler air is drawn in to 5 take the place of that expelled by the downstroke. By this means a continual change of the air in the cylinder is kept up, and thus the cylinder and piston are kept eool,notwith standing they may be running at a high velocity. This effect is further secured by the water entering from thc pipe Y into the recess w, and, passing through the perforations in the lining X, it runs down the outside of the cylinder, and thus assists in keeping it cool. The water,after performing its function upon the cylinder R,drips down between the extensions It and w into the ore in the mortar A, and thus not only keeps the cylinder cool,but washes it oif, keeping it free from dust and grit, and supplies the ore with the needed water for the proper operation of the stamps. rlhe extension w 'serves to prevent any of the crushed rock from getting up between the cylinder R and the lining X, and the water passing down between the extensions It and w will wash away anything that may accidentally find its way between them, or that may stick to extension It or shoe S. The piston and cylinder being round, and the lining and guide, in which the latter works, being also round, there is nothing to prevent the cylinder turning on the piston, and hence the former will rotate to accommodate the wear of the shoe and die, and thus the latter will always wear even. As there is no positive connection between the shoe and the eccentric, as the shoe ordie, orboth,wear away, the space between the piston and the bottom of the cylinder will increase, and thus adjusts itself to the wear of the die and shoe without other adjustment.

I do not limit myself to the exact construetion shown, as it is evident that the cylinder may be connected positively to the shaft and the piston to the shoe, or that a crank or otherequivalent device may be substituted for the eccentric shown in the drawings.

1. The combination, in a stamp, of a cylinder and piston,with a valve controlling the access of air to said cylinder, and a shaft and connections therewith, substantially as described, for giving motion to one of said parts, whereby the other part is raised by the partial vacuum formed in the cylinder, as set forth.

2. The combination, in a stamp, of a cylinder, a piston working air-tight therein, and a valve governing the access of air to said cylinder, with a rotary shaft and connections therewith,substantially as described,for giving motion to said piston, whereby the movement of the latter creates a partial vacuum in the cylinder and raises the same, substantially as described.

3. The combination, in a stamp, of a cylinder, R, provided with gland W,and carrying the shoe S, with the reciprocating piston Q, working air-tight therein,and the valve b, governing the access of air to said cylinder,wherc by the shoe is lifted by the partial vacuum formed in the cylinder, substantially as described.

4. The combination, in a stamp, of a reciprocating piston, Q, reciprocating cylinder R, provided with ribs, the fixed cylinder V,and the lining X,surrounding said ribs and having` water-passages, substantially as described.

5. The combination, in a stamp, of the rcciprocating piston Q, the reciprocating cylinder R, the fixed cylinder WV, having a waterpassage, w", and the lining X,constructed and arranged to leave a water-chamber on theoutside of the body of said lining, substantially as described.

6. The combination, in a stamp, of a reciprocating cylinder, R, a piston, Q, working airtight therein, and a valve, b, communicating` with the interior 0f the cylinder and operated by the motion thereof through. connections, substantially as described.

7. The combination, in a stamp, of a reciprocating cylinder, R, a reciprocating piston,

working air-tight therein, and a valve, b, communicating with the interior of the cylinder, and mechanism,substantially as described, for opening said valve as the piston nears the bottom of its stroke and closing it as the piston rises, substantially as described.

8. The combination, in a stamp, of a reciprocating cylinder, and a reciprocating piston working therein, with a valve, b, connecting` with the interior of the cylinder, a stationary arm, e, and a lever, c, connected to the plug of said valve and operated by the said stationary arm e and the motion of the cylinder, substantially as described.

9. The combination, in a stamp, of a reciprocating cylinder, the shoe S,attaehed thereto, and a reciprocating piston, Q, working in said cylinder, with the valve b,com1nnnicating wit-h the interior of the cylinder, a lever, c, connected to the plug of said valve, and an adjustable arm,e, having a swivel-pin,d,through which lever c works,substantially as described.

10. The combination, in an ore-stamp, of a reciprocating shoe, its carrier and the guides for the same,with a guard (as the extension w) extending below the guides in which said carrierworks, and surrounding, without touching, said shoe, substantially as and for the purpose specified.

In testimony whereof Iafx my signature in presence of two witnesscs,this 17th day of February, 1885.

VILLIM S. SHARPNEGK. Vitn esses:

S. S. MARTIN,

WVM. KNArr.

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